diff --git a/package-lock.json b/package-lock.json
index afd5c8b..0a66084 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -377,7 +377,6 @@
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+      "resolved": "https://registry.npmjs.org/@types/jest/-/jest-24.9.1.tgz",
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@@ -815,6 +820,14 @@
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-      "dev": true
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@@ -1158,8 +1167,7 @@
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-      "dev": true
+      "integrity": "sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ="
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@@ -1453,8 +1460,7 @@
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-      "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I=",
-      "dev": true
+      "integrity": "sha1-1RQsDK7msRifh9OnYREGT4bIu/I="
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@@ -2197,8 +2203,7 @@
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-      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0=",
-      "dev": true
+      "integrity": "sha1-tdRU3CGZriJWmfNGfloH87lVuv0="
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@@ -2682,7 +2687,6 @@
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@@ -2742,8 +2746,7 @@
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-      "dev": true
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@@ -3115,7 +3118,6 @@
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@@ -3189,11 +3191,16 @@
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+      "version": "4.17.21",
+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
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       "dev": true
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+    "lodash.memoize": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/lodash.memoize/-/lodash.memoize-4.1.2.tgz",
+      "integrity": "sha1-vMbEmkKihA7Zl/Mj6tpezRguC/4="
+    },
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@@ -3227,6 +3234,11 @@
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+      "resolved": "https://registry.npmjs.org/make-error/-/make-error-1.3.6.tgz",
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+    },
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       "resolved": "https://registry.npmjs.org/makeerror/-/makeerror-1.0.11.tgz",
@@ -3305,8 +3317,7 @@
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-      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
-      "dev": true
+      "integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ="
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@@ -3333,7 +3344,6 @@
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@@ -3341,8 +3351,7 @@
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-          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
-          "dev": true
+          "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0="
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@@ -3663,8 +3672,7 @@
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-      "dev": true
+      "integrity": "sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw=="
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@@ -3727,7 +3735,6 @@
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-      "dev": true,
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@@ -3776,8 +3783,7 @@
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       "resolved": "https://registry.npmjs.org/react-is/-/react-is-16.12.0.tgz",
-      "integrity": "sha512-rPCkf/mWBtKc97aLL9/txD8DZdemK0vkA3JMLShjlJB3Pj3s+lpf1KaBzMfQrAmhMQB0n1cU/SUGgKKBCe837Q==",
-      "dev": true
+      "integrity": "sha512-rPCkf/mWBtKc97aLL9/txD8DZdemK0vkA3JMLShjlJB3Pj3s+lpf1KaBzMfQrAmhMQB0n1cU/SUGgKKBCe837Q=="
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@@ -3919,7 +3925,6 @@
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-      "dev": true,
       "requires": {
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       }
@@ -4013,8 +4018,7 @@
     "semver": {
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       "resolved": "https://registry.npmjs.org/semver/-/semver-5.7.1.tgz",
-      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ==",
-      "dev": true
+      "integrity": "sha512-sauaDf/PZdVgrLTNYHRtpXa1iRiKcaebiKQ1BJdpQlWH2lCvexQdX55snPFyK7QzpudqbCI0qXFfOasHdyNDGQ=="
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@@ -4406,7 +4410,6 @@
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       "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-5.5.0.tgz",
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-      "dev": true,
       "requires": {
         "has-flag": "^3.0.0"
       }
@@ -4508,6 +4511,38 @@
         "punycode": "^2.1.0"
       }
     },
+    "ts-jest": {
+      "version": "24.3.0",
+      "resolved": "https://registry.npmjs.org/ts-jest/-/ts-jest-24.3.0.tgz",
+      "integrity": "sha512-Hb94C/+QRIgjVZlJyiWwouYUF+siNJHJHknyspaOcZ+OQAIdFG/UrdQVXw/0B8Z3No34xkUXZJpOTy9alOWdVQ==",
+      "requires": {
+        "bs-logger": "0.x",
+        "buffer-from": "1.x",
+        "fast-json-stable-stringify": "2.x",
+        "json5": "2.x",
+        "lodash.memoize": "4.x",
+        "make-error": "1.x",
+        "mkdirp": "0.x",
+        "resolve": "1.x",
+        "semver": "^5.5",
+        "yargs-parser": "10.x"
+      },
+      "dependencies": {
+        "camelcase": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-4.1.0.tgz",
+          "integrity": "sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0="
+        },
+        "yargs-parser": {
+          "version": "10.1.0",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-10.1.0.tgz",
+          "integrity": "sha512-VCIyR1wJoEBZUqk5PA+oOBF6ypbwh5aNB3I50guxAL/quggdfs4TtNHQrSazFA3fYZ+tEqfs0zIGlv0c/rgjbQ==",
+          "requires": {
+            "camelcase": "^4.1.0"
+          }
+        }
+      }
+    },
     "tunnel-agent": {
       "version": "0.6.0",
       "resolved": "https://registry.npmjs.org/tunnel-agent/-/tunnel-agent-0.6.0.tgz",
@@ -4532,6 +4567,11 @@
         "prelude-ls": "~1.1.2"
       }
     },
+    "typescript": {
+      "version": "3.9.9",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.9.tgz",
+      "integrity": "sha512-kdMjTiekY+z/ubJCATUPlRDl39vXYiMV9iyeMuEuXZh2we6zz80uovNN2WlAxmmdE/Z/YQe+EbOEXB5RHEED3w=="
+    },
     "uglify-js": {
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       "resolved": "https://registry.npmjs.org/uglify-js/-/uglify-js-3.7.0.tgz",
diff --git a/yarn.lock b/yarn.lock
index 586592c..7378469 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2161,9 +2161,9 @@ lodash.sortby@^4.7.0:
   integrity sha1-7dFMgk4sycHgsKG0K7UhBRakJDg=
 
 lodash@^4.17.13, lodash@^4.17.15:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
+  version "4.17.21"
+  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.21.tgz#679591c564c3bffaae8454cf0b3df370c3d6911c"
+  integrity sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==
 
 loose-envify@^1.0.0:
   version "1.4.0"